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2. The cutting edge of the hand instruments should always be kept sharp as dull instruments may cause: 1/Loss of control 2/More pain 3/Prolonged time for operating procedures 4/Reduce the quality and precision of tooth preparation

3. ADVANTAGES OF INSTRUMENTS SHARPENING: 1/Less time for dental procedures 2/Easier calculus removal 3/Improved stroke control 4/Reduced number of strokes 5/Increased patient comfort and satisfaction 6/Reduced clinician fatigue

5. Your goal when sharpening is to produce a sharp cutting edge while maintaining the original shape of the instrument. Determining the sharpness of your instruments: 1\Glare Test: a sharp cutting edge does not reflect light, but a dull one does. If you see light reflecting from the cutting edge, the instrument is quite dull. 2\Acrylic Test Stick 3\Clinical Performance

6. \ Acrylic Test Stick

7. SHARPENING TOOLS 1\Stationary sharpening stone e.g Arkansas stone, silicone carbide 2\Mechanical sharpener: easier and less time consuming

9. THANK YOU.